Utility knife



FIG. 1 is a perspective view from the side of the invention;

FIG. 2 is a side elevational view of the invention, the other side being a mirror image thereof;

FIG. 3 is a top view of the invention;

FIG. 4 is a bottom view of the invention;

FIG. 5 is a front end view of the invention taken from the left in FIG. 3; and,

FIG. 6 is a rear end view of the invention.

The broken lines depict portions of the utility cutter in which the design is embodied that are not considered part of the claimed design. 

CLAIM The ornamental design for a utility knife, as shown and described. 